Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of transmitting feedback information by a relay station in a wireless communication system employing the relay station, the method comprising: receiving a feedback allocation advanced-MAP information element (IE) from a base station; measuring the feedback information in a unit of each partition by dividing a subband into a plurality of partitions, wherein each partition is one physical resource unit (PRU) including 18 subcarriers; and transmitting alternately the measured feedback information for each partition according to a specific period, wherein a unit of feedback measurement is determined by an ARS_Feedback_Mode field in the feedback allocation A-MAP IE, wherein if a value of the ARS_Feedback_Mode field has ‘1’, the measured feedback information is transmitted in the unit of the PRU, wherein if a value of the ARS_Feedback_Mode field has ‘0’, the measured feedback information is transmitted in the unit of the subband, wherein the value of the ARS_Feedback_Mode field is applied when a value of feedback mode is a specific value that supports a closed loop-single user (CL-SU) in a localized permutation for frequency selective scheduling, wherein the feedback information for two PRUs among the feedback information for four PRUs are transmitted together within a specific time period, and wherein the feedback information for each partition is cyclically and alternately transmitted in the order of the subband such that the feedback information for a fourth PRU is transmitted after transmission of the feedback information for a second PRU, which was transmitted after the transmission of the feedback information for a third PRU, which was transmitted after the transmission of the feedback information for a first PRU.
A wireless relay station transmits feedback to a base station. First, the relay station receives configuration data from the base station. The relay station divides a communication band into multiple partitions, each being a physical resource unit (PRU) of 18 subcarriers. Then, the relay station measures feedback information for each partition. The unit of feedback measurement (PRU or entire subband) depends on a field in the configuration data; if set to '1', feedback is measured per PRU, else per subband. This applies only when configured for closed-loop single-user communication with frequency-selective scheduling. Feedback for two PRUs is transmitted together in a single time period. Finally, the relay station transmits the feedback information for each partition cyclically in a specific order, ensuring the fourth PRU's feedback follows the second PRU's feedback, which follows the third PRU's, which follows the first PRU's.
2. The method of claim 1 , wherein the feedback information includes at least one of a channel quality indicator (CQI) and a precoding matrix indicator (PMI).
The method of transmitting feedback information by a relay station in a wireless communication system employing the relay station, as previously described, where the relay station receives configuration data from the base station; divides a communication band into multiple partitions, each being a physical resource unit (PRU) of 18 subcarriers; measures feedback information for each partition, where the unit of feedback measurement depends on configuration data and applies only when configured for closed-loop single-user communication; transmits feedback for two PRUs together; and transmits feedback cyclically, the feedback information specifically includes a channel quality indicator (CQI) and/or a precoding matrix indicator (PMI).
3. The method of claim 1 , wherein a unit of feedback measurement is determined by a message transmitted by the relay station.
The method of transmitting feedback information by a relay station in a wireless communication system employing the relay station, as previously described, where the relay station receives configuration data from the base station; divides a communication band into multiple partitions, each being a physical resource unit (PRU) of 18 subcarriers; measures feedback information for each partition; transmits feedback for two PRUs together; and transmits feedback cyclically, instead has the unit of feedback measurement (PRU or entire subband) being determined by a message transmitted *by the relay station* to the base station.
4. An apparatus for transmitting feedback information, the apparatus comprising: a processor configured to receive a feedback allocation advanced-MAP information element (IE) from a base station, and to measure the feedback information in a unit of each partition of a plurality of partitions constituting a subband, wherein each partition is one physical resource unit (PRU) including 18 subcarriers; and a radio frequency (RF) unit coupled to the processor and configured to alternately transmit the measured feedback information for each partition according to a specific period, wherein a unit of feedback measurement is determined by an ARS_Feedback_Mode field in the feedback allocation A-MAP IE, wherein if a value of the ARS_Feedback_Mode field has ‘1’, the measured feedback information is transmitted in the unit of the PRU, wherein if a value of the ARS_Feedback_Mode field has ‘0’, the measured feedback information is transmitted in the unit of the subband, wherein the value of the ARS_Feedback_Mode field is applied when a value of feedback mode is a specific value that supports a closed loop-single user (CL-SU) in a localized permutation for frequency selective scheduling, wherein the feedback information for two PRUs among the feedback information for the four PRUs are transmitted together within a specific time period, and wherein the feedback information for each partition is cyclically and alternately transmitted in the order of the subband such that the feedback information for a fourth PRU is transmitted after transmission of the feedback information for a second PRU, which was transmitted after the transmission of the feedback information for a third PRU, which was transmitted after the transmission of the feedback information for a first PRU.
A wireless relay station transmits feedback to a base station. It includes a processor to receive configuration data from the base station. The processor divides a communication band into multiple partitions, each being a physical resource unit (PRU) of 18 subcarriers, and measures feedback information for each partition. The unit of feedback measurement (PRU or entire subband) depends on a field in the configuration data; if set to '1', feedback is measured per PRU, else per subband. This applies only when configured for closed-loop single-user communication with frequency-selective scheduling. Feedback for two PRUs is transmitted together in a single time period. A radio frequency (RF) unit then transmits the feedback information for each partition cyclically in a specific order, ensuring the fourth PRU's feedback follows the second PRU's feedback, which follows the third PRU's, which follows the first PRU's.
5. The method of claim 4 , wherein the feedback information includes at least one of a channel quality indicator (CQI) and a precoding matrix indicator (PMI).
The apparatus for transmitting feedback information, comprising a processor configured to receive configuration data from the base station, divide a communication band into multiple partitions of 18 subcarriers each, and measure feedback for each partition, and an RF unit configured to transmit feedback for two PRUs together cyclically, as previously described, where the feedback information specifically includes a channel quality indicator (CQI) and/or a precoding matrix indicator (PMI).
6. The apparatus of claim 4 , wherein the RF unit is further configured to receive a feedback allocation advanced-MAP information element (IE) from a base station.
The apparatus for transmitting feedback information, comprising a processor configured to receive configuration data from the base station, divide a communication band into multiple partitions of 18 subcarriers each, and measure feedback for each partition, and an RF unit configured to transmit feedback for two PRUs together cyclically, as previously described, additionally the RF unit is further configured to receive a feedback allocation advanced-MAP information element (IE) from a base station.
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November 25, 2014
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